... rolled seamless alloy/unalloy titanium tubesGradestatusOuterDiameter/mmWall thickness/mmGr1Gr2Gr3Gr4Gr7Gr11Gr12Annealed(M)>10~150.5,0.6,0.8,1.0, ... ,4.5 Table 2 Welded tubesGradestatusOuterDiameter/mmWall thickness/mmGr1Gr2Gr3Gr4Gr7Gr11Gr12Annealed(M)160.5,0.6,0.8,1.0190.5, ... ,2.5Table 3 Welded-rolled tubeGradeStatusOuterDiameter/mmWall thickness/mmGr1Gr2Gr3Gr4Gr7Gr11Gr12Annealed(M)6~100.5,0.6,0.8,1.0, ...